x86: Adjust config to support DM_VIDEO

Update the common configuration so that it works correctly when
CONFIG_DM_VIDEO is enabled. This involves dropping the legacy CONFIG_VIDEO
option and changing the stdio device from "vga" to "vidconsole".

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

include/configs/x86-chromebook.h

@@ -53,8 +53,14 @@
 
 #define CONFIG_SYS_WHITE_ON_BLACK
 
+#ifdef CONFIG_DM_VIDEO
+#define VIDEO_DEV "vidconsole"
+#else
+#define VIDEO_DEV "vga"
+#endif
+
 #define CONFIG_STD_DEVICES_SETTINGS     "stdin=usbkbd,i8042-kbd,serial\0" \
-					"stdout=vga,serial\0" \
-					"stderr=vga,serial\0"
+					"stdout=" VIDEO_DEV ",serial\0" \
+					"stderr=" VIDEO_DEV ",serial\0"
 
 #endif

include/configs/x86-common.h

@@ -131,11 +131,13 @@
 /*-----------------------------------------------------------------------
  * Video Configuration
  */
+#ifndef CONFIG_DM_VIDEO
 #define CONFIG_VIDEO
 #define CONFIG_VIDEO_SW_CURSOR
 #define VIDEO_FB_16BPP_WORD_SWAP
 #define CONFIG_VGA_AS_SINGLE_DEVICE
 #define CONFIG_CFB_CONSOLE
+#endif
 #define CONFIG_CONSOLE_SCROLL_LINES 5
 
 /*-----------------------------------------------------------------------